DE10059125A1 - Perforating tool has one half with perforating teeth separated by gap from second half which has cutting zone with sections of cutting edge alternating with groups of perforating teeth which have slanting tip - Google Patents

Abstract

The perforating tool for single or multi-layer bands of material or copy produced from them has one half (16) with perforating teeth (15). This is separated by a gap from the second half (17) which has a cutting zone (19) with sections of cutting edge (21) alternating with groups of perforating teeth (22) which have a slanting tip.

Description

The invention relates to a device for perforating material webs can be made up of one or more layers and of which Exem can be processed Plare are separated.

WO 00/10899 relates to a method and a device for perforating Material webs. According to this method and device, copies are made the transverse or longitudinal folding separated from the leading end of a material web. The Material web can consist of one layer or of several web strands. Along the The web running direction of the material web are two consecutive cutting or perfo rier- and cutting devices arranged. Assigned to the first longitudinal fold In the cutting unit, the material web strand is cut in this area. A wide one Right perforating / cutting device perforates or cuts the material web strand in the loading rich of a cross fold with the formation of material bridges. At least one of the Cutting tools or perforating tools can be adjusted relative to the material web strand bar.

FR 2 693 403 relates to a folded copy which is used for the production of brochures, Books or the like can be used, a tool for making Per formations and a method for producing the same. Using an appropriately con figured perforating knife can be used on at least one half of the specimen Make cuts, the incisions partially perpendicular to the extent of the fold back get lost. By means of the incisions in at least one half of the fold back, the thrust of the inner layers of the folded copy acting on the outer copy layers are absorbed so that no deformations in the outer layers of the specimen Fold back area can occur.

US 4,951,967 relates to a perforating knife for signatures and a herge put signature. A signature, i.e. H. one copy consists of a number of individual layers  of copies which are arranged along a fold line. Along the fold line a series of spaced perforations are provided across the width thereof. The Rows of spaced perforations are made using a perforating knife generated, which has a number of spaced-apart perforation sections. With Such a kind of folded copy will be when stacking a large number of copies Avoid bulges on the fold back.

US 5,524,930 relates to a perforating knife and a copy. A perforating knife ser comprises a one-piece sheet, which is very thin with respect to its length is. A cutting area is formed on a long side of the perforating knife; at the On the long side, it contains a combination of a series of straight lines spaced and angled sections. The angled seconds tions are arranged so that they are arranged facing the center of the perforating knife are and are formed only on one half of the perforating knife. According to one The variant is a longer cutting section in the middle of the perforating knife provided, on which there are three angled sections and connect a straight section. The angled sections are like this executed that they point in one direction, so that the resulting on the fold copy The fold line only creates incisions pointing in one direction. The emerging one cuts form easily displaceable sections, which in turn form the fold lines or fold back Form on the copy that are smoothly folded without wrinkling or crinkling to have exercises. The angled cuts can be straight or curved as long as they are pointing approximately to the center of the perforating knife and are only facing on one side of the perforating knife.

Are 48-page, 64-page or 96- Pages made copies wins the possibility of shear stress compensation to the inner of the individual copy layers in relation to the outer copy layers is becoming increasingly important in order not to affect the quality of the copies during further processing harmonious.

The invention is based on the object, preferably on multilayered fold copies in the area of the fold back, relative movements of inner copy layers to outer exem allow plots. According to the invention, this object is achieved through the features of Pa claim 1 solved.

The advantages of the solution according to the invention can be seen above all in that the Folded spine of multilayered copies on one side with punctiform perforation openings  can be provided so that air can escape, on the other hand, another half of the can be provided with incisions on the copy of the fold back to be trained, which is a relative movement of the individual layers of the multilayer fold copy otherwise permitted. Thanks to the configuration of the individual Perfo creating the incisions Riermesserzungen as inclined surfaces, the incisions depending on the thickness of the perforating material web strand in material length dependent cutting length. Da This ensures that the 48-, 64- and even 96-page copies are the ones cuts are made at an incision depth, which is a relative movement of the inner Layers of the multilayer fold copy relative to the outer layers of the fold copy allow. The perforating tool proposed according to the invention is attached Devices perforated cylinders attached so that it is easy after extended use can be replaced.

In a further embodiment of the idea underlying the invention is a work tool-free gap arranged in the area of a first half of the perforating tool, wel cher adjacent to a cutting tool in the second half of the perforating tool. Through the tool-free area of the perforating knife configured according to the invention a material bridge is created on multilayered specimens in the central area, wel che stabilizes the fold copy, which preferably contains several layers.

In an advantageous embodiment of the perforating knife configuration according to the invention borders the cutting zone in the second half of the perforating knife on the one hand to the tool free gap in the first half of the perforating tool and on the other hand to a first Group of inclined perforating tongues in the second half of the confi according to the invention belted perforating tool. This means that multilayered folds on the fold back plank alongside the material bridge formed by the tool-free gap cut into the fold back, which in turn in the middle area of the copy for balances emerging shear stresses. The preferably as a perforator tongue-shaped perforation elements of the individual groups of perforation elements The second half of the perforating tool are around with respect to the perforating tool an angle between 20 ° and 40 °. The is particularly preferably Inclination angle of the individual perforation tongues of the groups of perforation elements 30 °.

The individual groups are inclined, preferably designed as perforating tongues Perforating elements are within the second half of the configured according to the invention Perforating tool in alternating order with respect to cutting sections brings so that there is both a shear stress reduction in this half of the fold back  allow incisions to be formed as well as trained parallel to the fold back Cuts can be applied.

The perforating tool configured according to the invention in the second half Taken groups of perforating elements are oblique in one embodiment represents, the inclination symmetrical with respect to the levels of the perforation stuff fails. In this embodiment variant of the perforating elements are both Front and rear edges deflected out of the plane of the cutting tool.

In further design options of the perfo proposed according to the invention riermesser the individual perforation tongues within the second half of the Perfo rierwerkzeuges be inclined so that only the rear edge of the perforating tongues are issued from the level of the perforating tool. It is just as possible to have one Inclination of the perforation tongues within the groups of perforation elements to form that only their front edge out of the plane of the perforating tool is and the trailing edge essentially in the plane of the second half of the Perfo rierwerkzeug lies. The fact that the individual perforation tongues of the groups of perforation elements within the second Half of the perforating tool configured according to the invention by an angle of between 20 ° and 40 °, but particularly preferably 30 ° from the level of the perforating unit are exhibited.

The compensation of shear stresses within multilayered copies in their Incisions allowing the fold back region are preferred from inclined in Groups arranged perforating elements generated, which are designed as perforating tongues are. The individual perforation tongues of the groups on perforation elements are longitudinal slots separated from each other, so that each of the perforating tongues is assigned a free space is through which the when perforating or cutting multilayer material webs paper dust that is inevitably produced can be discharged free of deposits.

In a preferred embodiment, the individual perforating elements can also have their tips be provided with an inclined surface which ends in a perforating tongue tip. In the incisions to be made in multi-layer material webs to compensate for shavings Holes in one half of the fold back can be manufactured particularly precisely when First a selective contact between the perforations making the incisions tongues in the tip area of the perforating tongues when hitting the top of the multi-layer material web occurs. By at an angle from the perforator Tongue tip downward slope can vary depending on the depth of penetration of the perforating tongue  the incision length in the fold back area in the respective multi-layer material web of the multilayer fold copy can be set.

The inventive design of a perforating tool is shown in preferably recorded on perforating cylinders in a folder of web-processing rotary printing machines are arranged. It is irrelevant whether the web-processing rotary printing press is a commercial web press onsdruckmaschine or a newspaper press.

The invention is described in more detail below with reference to the drawing.

It shows:

Fig. 1 is the foldability of species of adjusting lateral offset at the open ends of the specimen,

Fig. 2 is a plan view of a specimen to falzendes, on one half of the present invention applied incisions are formed,

Fig. 3 is a plan view of a variant embodiment of the invention, before piercing tool beaten

Fig. 4 shows a group of inclined perforating elements in an enlarged representation and

Fig. 5.1-5.4 further variants of half of the perforating knife proposed according to the invention.

From the view in Fig. 1 which adjusting during folding of copy lateral offset of individual copy sheets is a multi-layer specimen to the open Falzexemplarseite forth in greater detail.

The in Fig. 1 shown to be folded specimen 1 is with respect to a reference line 2 is directed. The closed end 3 of the copy 1 to be folded lies on the reference line 2 , of which only the outer copy position is shown in the illustration 1 . With reference numeral 4 , the inside of the folded back formed at the closed end 3 of the copy 1 to be folded is designated. The outer layer of the copy 1 to be folded, ie the upper open side 6, is turned over with an outer radius of curvature 8 , while the lower open side 7 of the folded copy 1 is turned over with a smaller radius of curvature 9 . A shift 10 at the open end 5 of the copy 1 results from the different radii 8 and 9 on the copy 1 , which is caused by the shift of the upper open side 6 relative to the lower open side 7. This effect becomes clearer the more layers the copy to be processed contains.

From the view in Fig. 2, the plan view is a copy to falzendes forth in more detail, on one half of the incisions according to the invention to be applied are adapted to shear stress compensation.

The copy 1 to be folded is shown in its unfolded state 11 as shown in FIG. 2, the arrow 14 marking the direction in which a displacement 10 will occur at the open end 5 of the copy 1 to be folded, originating from the Shift from the upper open side 6 to the lower open side 7 of the multilayer copy 1 . While along the fold edge 12 a perforation pattern 13 is formed from punctiform perforation openings, the region of the fold edge 12 below the drawn-in arrow 14 , which indicates the directions of displacement, has a perforation pattern 13 which is characterized by incisions running obliquely towards the center of the specimen. The individual cuts all run towards the center of the unfolded copy 11 and allow shear stress compensation in the area of the folded edge 12 of the copy.

From the view in Fig. 3 is a plan view of a first embodiment of the present invention proposed in the form of a piercing tool Perforiermes sers more apparent.

The perforating tool 15 shown in FIG. 3 can be divided into two halves 16 and 17 with respect to an imaginary center line as shown in broken lines.

The formation of the first half 16 of the perforating tool 15 is characterized by a uniform sequence, the fold back in this area punctiform perforating teeth 28 , which are arranged in continuous repetition 35 over the length of the first half 16 . The perforating teeth 28 acting selectively on the fold back of a multilayer copy provide 1 openings in the fold back through which air enclosed in the fold back, which bulges the back, can escape, so that an air-inclusion-free fold back can be formed even with multilayer copies.

A tool-free area 18 adjoins the continuous sequence of perforating teeth 35 in the first half 16 of the perforating tool 15 . The tool-free loading area 18 enables the formation of a material bridge in the middle of a multilayer fold copy. The material bridge, which adjusts itself according to the selected depth of the tool-free gap 18 on the first half 16 of the perforating tool 15 , stabilizes the folded back of the multilayered copy in the area from the center thereof.

A cutting zone 19 is formed in the second half 17 of the perforating tool 15 proposed according to the invention. The cutting zone 19 directly adjoins the tool-free gap 18 in the first half 16 of the perforating tool 15 and extends up to a first group 22 of inclined perforating elements. By means of the cutting zone 19 adjacent to the tool-free gap 18 in the multi-layer specimen he created material bridge, a partial cut is generated in the fold back.

A first group 22 of inclined perforating elements adjoins the continuously extending cutting zone 19 . Behind the first group 22 inclined Perfo rierelemente, which are preferably formed as perforations separated by longitudinal slots, a straight section 21 follows, which is designed as a cutting knife. Cutting knife areas 21 and groups 22 of inclined perforating elements are added in the second half 17 of the perforating tool 15 configured according to the invention in an alternating sequence. The perforating knife configured according to the invention extends over a width 38 which preferably corresponds to the maximum material web format that can be processed.

Above the side view of the perforating tool 15 configured according to the invention there is a plan view of both the straight cutting edges 21 and the groups 22 of inclined perforating elements arranged in an alternating order, which are preferably designed as perforating tongues. From the center line shown in dashed lines to the first group 22 , an extended cutting zone 19 extends. The height of the piercing tool 15 according to the illustration of FIG. 3 is indicated by reference numeral 20, wherein the perforating tool 15 can be accommodated removably to lateral surfaces of perforating material webs, for example, in manufacturing folders. Perforating tools that are subject to high wear and tear can be replaced very quickly and easily with new ones, so that the perforations can be formed on multilayer material webs in the quality and accuracy required.

From the view in Fig. 4 is a group of inclined perforating shows in greater detail.

The plan view, shown on an enlarged scale in FIG. 4, of a group 22 of perforating elements - preferably perforating tongues - comprises a first perforating tongue 22.1 , a second perforating tongue 22.2 and a third perforating tongue 22.3 . The individual Perfo rierzungen are separated from each other by longitudinal slots 25 , which can be used to discharge the paper dust accumulating during perforation, so that this plant can be derived from the perforation area without stanchions. The three perforating tongues 22.1 , 22.2 , 22.3 are also separated by a longitudinal slot 25 and are joined by a straight section 21 , the upper edge of which is designed as a straight cutting edge. In addition to the embodiment variant shown in FIG. 4 of a group 22 of obliquely positioned perforating elements with three perforating tongues, within a group 22 of perforating tongues on the second half 17 of the perforating tool 15 , only two or more, ie four or five individual ones, can be passed through per group 22 Longitudinal slots 25 separate perforating tongues can be made.

The perforating tongues run out in a tip 26 which is part of an inclined surface 23 . Upon contact with the multi-layer material web to be perforated, the perforating tongue tips 26 act on the uppermost layer of the material, so that the incisions made in the direction of the center of the folds or perforations to be folded or perforated by means of the perforating tongues depend on their length the thickness, ie the number of layers of the individual material webs fail. The thicker the material webs to be folded or perforated, ie the more layers the specimen to be perforated on the back of the fold is contained, the longer the incisions according to the perforation pattern 13 are to be formed in one half of the fold back on the specimen. The cut length depends on the immersion depth of the inclined surfaces 23 of the perforating tongues 22.1 , 22.2 , 22.3 of the perfection tool 15 configured in the second half 17 of the inventive perforating tool 15 in the multi-layer material web.

Go from the representations according to FIGS. 5.1 to 5.4 individual variants of the second half 17 of the present invention configured piercing tool 15 more apparent.

From the view in Fig. 5.1 shows that in the second half 17 of the perfo rierwerkzeuges 15 individual groups 22 tilted Perforierzungen are formed. In this embodiment variant, the groups 22 of inclined perforating elements comprise only two perforating tongues 22.1 and 22.2 . The individual Perforierzungen 22.1 and 22.2 are due to longitudinal slots 25 and to separate from each other a rotation axis 31 which coincides with the reference line 37 on the perforating tool 15, evenly, ie leading edge 22.5, and at the rear edge 22.4 by the skew angle 24 from the plane of perfo rierwerkzeuges 15 issued , The inclination angle 24 , around which the perforating tongues are issued from the plane of the perforating tool 15 , is preferably in the range between 20 ° and 40 °. The inclination angle 24 is particularly preferably 30 °, the inclination being chosen with the front edge of the perforating tongues 22.1 and 22.2 to the center of the copy 1 to be folded.

Since in the embodiment variant according to 5.1 both the leading edge 22.5 and the trailing edge 22.4 are symmetrical to the axis of rotation 31 of each perforating tongue 22.1 or 22.2 from the plane of the perforating tool 15 , one speaks of a symmetrical exhibition 32 . Between the only two Perfo rierzungen 22.1 or 22.2 comprehensive groups 22 of inclined Perforierele elements are parallel to the reference line 37 on the perforating tool 15 individual Schneidab sections 21st The groups 22 of inclined perforating tongues 22.1 and 22.2 and the straight cutting sections 21 are applied in the second half 17 of the perforating tool 15 in an alternating order.

For the embodiment according to Fig. 5.2 shows an alternative embodiment is possible ness of the second half 17 of the piercing tool 15 more apparent. In this embodiment variant, the groups 22 of obliquely positioned perforating tongues 22.1 , 22.2 , which follow the extended cutting section 19 , are issued with their trailing edge 22.4 out of the plane of the perforating tool 15 , while the leading edge 22.5 is still in the plane of the perforating tool. According to this exhibition scheme is also spoken of an off-center offset 33 of the preferably designed as perforating tongues, inclined perforating tongues 22.1 and 22.2 from the plane of the perforating tool 15 . Reference number 24 denotes the angle of exposure, which in a particularly preferred embodiment of a perforating tool is 30 °. Between the individual perforation tongues 22.1 and 22.2 separated from one another by slot-shaped openings 25 , analogous to the illustration according to FIG. 5.1, there are individual straight incisions 21 which are also inclined by the groups 22 perforation tongues 22.1 , 22.2, also by slot-shaped perpendicular to the drawing plane as shown in Fig. 5.2 extending openings are removed 25. The group 22 of inclined Perfo rierzungen according to the embodiment in Fig. 5.2 include only two perforation tongues. In addition, it is of course also possible to provide the individual groups 22 of inclined perforation elements with three or five or any other number of perforation tongues. According to this display pattern 33 , the leading edges 22.5 all of the individual perforating tongues 22.1 and 22.2 are all still in the plane of the perforating tool 15 .

From the view in Fig. 5.3 shows a further embodiment is the arrangement of groups 22 of inclined perforating within the second half 17 of a piercing tool 15 configured according to the invention more apparent.

At the elongated cutting sections 19 are groups 22 of inclined perforating elements, which are broken in an alternating order of straight ver in the plane of the perforating tool 15 lying cutting sections 21 un. The reference line 37 , with respect to which the perforating tongues are at an angle of inclination 24 , is parallel to the perforating tool 15 . In the embodiment variant of the perforating tool according to the illustration in FIG. 5.3, the rear edges 22.4 of the individual perforating tongues separated from one another by longitudinal slots 25 lie in the plane of the perforating tool 15 , while their front edge 22.5 is deflected downward in the plan view as shown in FIG. 5.3 are. This embodiment variant also shows an off-center inclined position 34 of the individual perforating tongues of the groups 22 of inclined perforating elements. Due to this arrangement pattern of straight sections 21 and the individual perforation tongues 22.1 and 22.2 of groups 22 of inclined perforation elements , longer free spaces 36 form between the trailing edges 22.4 of the individual perforation tongues 22.1 , 22.2 , which later form material bridges in the fold back of the preferably multilayered fold copy.

From the view in Fig. 5.4, a further possible embodiment of the second half 17 is of a piercing tool 15 shown in more detail. This embodiment variant is characterized by the fact that in the second half 17 of the perforating tool according to herringbone pattern a plurality 22.1 , 22.2 to 22 .n individual, inclined perforating tongues are formed. The individual perforated tongues arranged in a symmetrical exhibition 32 are interrupted by free spaces 36 . The perforating tongues 22.1 to 22 .n are each deflected about their axis 31 both at the front and at the rear edge with respect to the reference line 37 of the perforating tool 15 . Here too there is a continuous repetition of perforating tools over half 17 of the perforating knife. All the perforating tongues arranged in a continuous repetition are deflected from the perforating tool plane by an angle 24 with respect to the reference line 37 . The deflection angle is preferably in the range between 20 ° and 40 °, with a deflection angle of 30 ° being particularly preferred.

By means of the embodiments of the present invention proposed perforating tool according to the Fig. 3, 5.1, 5.2, 5.3 and 5.4 can be applied to one half of a Falzrüc a ken of multiple layers of collapsed Falzexemplares incisions depending on the strength, that is, the position number of the copy contribute to a Schubspan voltage compensation of the inner copy layers relative to the outer copy layers allow so that the fold back 4 can be formed flatter overall and the lateral offset 10 of the individual layers to each other an open end of the multilayer Falzex emplares 1 can be significantly reduced.

LIST OF REFERENCE NUMBERS

1

copy

2

reference line

3

closed end

4

folding spine

5

open end

6

upper open side

7

lower open side

8th

outer curvature

9

inner curvature

10

shift

11

unfolded copy area

12

folding edge

13

perforation

14

shift direction

15

perforating

16

first half

17

second half

18

tool-free gap

19

cutting zone

20

height extension

21

cutting section

22

Group of perforating elements

22.1

first perforating tongue

22.2

second perforating tongue

22.3

third perforating tongue

22.4

trailing edge

22.5

leading edge

23

inclined surface

24

Skew angle

25

slit-shaped opening

26

Perforierzungenspitze

27

-

28

continuous perforating teeth

29

center line

30

free space

31

axis of rotation

32

symmetrical exhibition

33

external exhibition

34

outer center exhibition leading edge

35

continuous repetition

36

free space

37

reference line

38

Wide perforating tool

Claims (14)

1. perforating tool for perforating single or multi-layer material webs or copies separated therefrom ( 1 ), the perforating tool comprising a first half ( 16 ) and a second half ( 17 ), with the following features:

• 1. 1.1 a number of perforating teeth ( 15 ) accommodated in the first half ( 16 ) of the perforating tool
• 2. 1.2 a tool-free gap ( 18 ) formed in the first half ( 16 )
• 3. 1.3 a in the second half ( 17 ) arranged cutting zone ( 19 ) and
• 4. 1.4 at least one in the second half ( 17 ) in an alternating sequence formed from group ( 22 ) of perforating elements ( 22.1 , 22.2 , 22.3 ) which are inclined with respect to the perforating tool (IS).

2. Perforating tool according to claim 1, characterized in that the tool-free gap ( 18 ) of the first half ( 16 ) adjoins the cutting zone ( 19 ) of the second half ( 17 ). 3. Perforating tool according to claim 1, characterized in that the cutting zone ( 19 ) in the second half ( 17 ) on the one hand to the tool-free gap ( 18 ) and on the other hand to the groups ( 22 ) of inclined perforating elements ( 22.1 , 22.2 and 22.3 ) , 4. perforating tool according to claim 1, characterized in that the Perfo rierelemente ( 22.1 , 22.2 , 22.3 ) of the groups ( 22 ) with respect to the perforating tool ( 15 ) are inclined at an angle ( 24 ) between 20 ° and 40 °. 5. perforating tool according to claim 4, characterized in that the angle ( 24 ) is 30 °. 6. Perforating tool according to claim 1, characterized in that the groups ( 22 ) of perforating elements ( 22.1 to 22.3 ) contain cutting sections ( 21 ) in alternating order between the groups ( 22 ). 7. perforating tool according to claim 1, characterized in that the obliquely placed perforating elements ( 22.1 , 22.2 , 22.3 ) with respect to the perforating tool ( 15 ) symmetrically issued from the plane of the perforating tool ( 15 ) at the front edge ( 22.5 ) and rear edge ( 22.4 ) are. 8. perforating tool according to claim 1, characterized in that the obliquely placed perforating elements ( 22.1 , 22.2 , 22.3 ) are issued on one side with respect to the perforating tool ( 15 ) with their trailing edge ( 22.4 ) from the plane of the perforating tool ( 15 ). 9. perforating tool according to claim 1, characterized in that the obliquely placed perforating elements ( 22.1 , 22.2 , 22.3 ) with respect to the plane of the perforating tool ( 15 ) are issued with their front edge ( 22.5 ). 10. Perforating tool according to claim 1, characterized in that the obliquely placed perforating elements ( 22.1 , 22.2 , 22.3 ) are designed as perforating tongues. 11. Perforating tool according to claim 10, characterized in that the individual perforating elements ( 22.1 , 22.2 , 22.3 ) of a group ( 22 ) of perforating elements are separated from one another by slot-shaped openings ( 25 , 36 ). 12. Perforating tool according to claim 1, characterized in that the obliquely placed perforating elements ( 22.1 , 22.2 , 22.3 ) of the groups ( 22 ) of perforating elements have an inclined surface ( 23 ) at their tip ( 26 ). 13. Perforating device in a web-processing rotary printing machine subordinate folder, with a perforating tool according to one of the previous claims. 14. Perforating tool for perforating single or multi-layer material webs or specimens separated therefrom ( 1 ), which comprises a first half ( 16 ) and a second half ( 17 ), with the following features:

• - A number of perforating teeth ( 15 ) accommodated in the first half ( 16 ) of the perforating tool
• - A tool-free gap ( 18 ) formed in the first half ( 16 )
• - A in the second half ( 17 ) arranged cutting zone ( 19 ) and
• - A plurality of in the second half ( 17 ) arranged in a row and in relation to the perforating tool ( 15 ) slanted perforating elements (22.1, ... 22nd).